maven+struts2環境搭建

首先在struts2.xml文件配置一個包，在包中配置一個action，新建action，新建視圖，在action中定義由method定義的方法，這個方法一定要返回String類型，返回的是視圖的名稱。

直接上圖

一，首先是pom.xml，引入所需jar

<?xml version="1.0" encoding="UTF-8"?>
<!--
  Licensed to the Apache Software Foundation (ASF) under one
  or more contributor license agreements.  See the NOTICE file
  distributed with this work for additional information
  regarding copyright ownership.  The ASF licenses this file
  to you under the Apache License, Version 2.0 (the
  "License"); you may not use this file except in compliance
  with the License.  You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing,
  software distributed under the License is distributed on an
  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  KIND, either express or implied.  See the License for the
  specific language governing permissions and limitations
  under the License.
-->
<!-- $Id: pom.xml 642118 2008-03-28 08:04:16Z reinhard $ -->
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">

  <modelVersion>4.0.0</modelVersion>
  <packaging>war</packaging>

  <name>Strtus</name>
  <groupId>com.cyf</groupId>
  <artifactId>Strtus</artifactId>
  <version>1.0-SNAPSHOT</version>

  <build>
    <plugins>
      <plugin>
        <groupId>org.mortbay.jetty</groupId>
        <artifactId>maven-jetty-plugin</artifactId>
        <version>6.1.7</version>
        <configuration>
          <connectors>
            <connector implementation="org.mortbay.jetty.nio.SelectChannelConnector">
              <port>8888</port>
              <maxIdleTime>30000</maxIdleTime>
            </connector>
          </connectors>
          <webAppSourceDirectory>${project.build.directory}/${pom.artifactId}-${pom.version}</webAppSourceDirectory>
          <contextPath>/</contextPath>
        </configuration>
      </plugin>
      <plugin>
        <artifactId>maven-resources-plugin</artifactId>
        <version>2.6</version>
        <executions>
          <execution>
            <id>copy-xmls</id>
            <phase>process-resources</phase>
            <goals>
              <goal>copy-resources</goal>
            </goals>
            <configuration>
              <outputDirectory>${basedir}/target/classes</outputDirectory>
              <resources>
                <resource>
                  <directory>${basedir}/src/main/java</directory>
                  <includes>
                    <include>**/*.xml</include>
                  </includes>
                </resource>
              </resources>
            </configuration>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>
  <!-- 屬性配置 -->
  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>

  <dependencies>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>servlet-api</artifactId>
      <version>2.5</version>
      <scope>provided</scope>
    </dependency>

    <dependency>
      <groupId>org.apache.struts</groupId>
      <artifactId>struts2-core</artifactId>
      <version>2.5.1</version>
    </dependency>

  </dependencies>



</project>

二，web.xml

<!DOCTYPE web-app PUBLIC
        "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
        "http://java.sun.com/dtd/web-app_2_3.dtd" >
<web-app>
  <display-name>Archetype Created Web Application</display-name>
  <init-param>
    <param-name>config</param-name>
    <param-value>../../resources/struts.xml</param-value>
  </init-param>

  <filter>
    <filter-name>struts2</filter-name>
    <filter-class>
      org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter
    </filter-class>
  </filter>
  <filter-mapping>
    <filter-name>struts2</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

  <welcome-file-list>
    <welcome-file>login.jsp</welcome-file>
  </welcome-file-list>
</web-app>  

三，struts.xml

<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE struts PUBLIC
        "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
        "http://struts.apache.org/dtds/struts-2.3.dtd">

<struts>

    <constant name="struts.i18n.reload" value="false"/>
    <constant name="struts.devMode" value="false"/>

    <include file="struts-default.xml"/>

    <package name="default" extends="struts-default" namespace="/">

        <action name="login" class="com.carson.demo.action.UserAction" method="login">
            <result name="success">index.jsp</result>
            <result name="login">login.jsp</result>
        </action>

    </package>


</struts>

四，action

package com.carson.demo.action;

import com.opensymphony.xwork2.ActionSupport;
import org.apache.struts2.ServletActionContext;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.UnsupportedEncodingException;

public class UserAction extends ActionSupport {

    private static final long serialVersionUID = 1L;
    private String msg;

    public String getMessage() {
        System.out.println("測試有沒有走");
        return msg;
    }

    public String execute() {
        System.out.println("測試有沒有走！！！！！！！！！！");
        msg = "哈哈，我是struts2";
        return SUCCESS;
    }

    public String login() {
        try {
            HttpServletRequest request = ServletActionContext.getRequest();
            HttpServletResponse response = ServletActionContext.getResponse();
            request.setCharacterEncoding("UTF-8");
            response.setContentType("text/html;charset=utf-8");
            String username = request.getParameter("username");
            String password = request.getParameter("password");
            if ("admin".equals(username) && "123456".equals(password)) {
                return SUCCESS;
            } else {
                return "login";
            }
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        return SUCCESS;
    }
}

五，視圖

<%@ page language="java" contentType="text/html; charset=UTF-8"
         pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>登錄界面</title>
</head>

<body>
<form action="login" method="post">
    <table>
        <tr>
            <td>用戶名：</td>
            <td><input type="text" name="username" /> </td>
        </tr>
        <tr>
            <td>密碼：</td>
            <td><input type="text" name="password" /> </td>
        </tr>
        <tr>
            <td colspan="2">
                <input type="submit" value="登錄" />
                <input type="reset" value="重置" /></td>
        </tr>
    </table>
</form>
</body>
</html>

<%@ page language="java" contentType="text/html; charset=UTF-8"
         pageEncoding="UTF-8" isELIgnored="false" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>Hello Maven</title>
</head>

<body>
${message}
</body>
</html>

六，訪問地址

http://localhost:8080/Strtus/

 

七，注意事項

在用${}取值的時候老是不成功

事情的真相是，你的頁面沒有開EL支持…… 

<%@ page language="java" import="java.util.*" pageEncoding="utf-8" isELIgnored="false"%>